Synthesis of substituted 4-(1H-indol-6-yl)-1H-indazoles as potential PDK1 inhibitors
作者:Martin Brzozowski、Nathan J. O'Brien、David J.D. Wilson、Belinda M. Abbott
DOI:10.1016/j.tet.2013.11.054
日期:2014.1
The development of a preparative route to a series of novel 4-(1H-indo1-6-y1)-1H-indazole compounds as potential PDK1 inhibitors is described. The synthetic strategy centres on the late-stage Suzuki cross coupling of N-unprotected indazole and indole fragments. The use of a monoligated palladium catalyst system was found to be highly beneficial in the cross-coupling reaction. The indazole and indole fragments were constructed by diazotisation/cyclisation and SNAr/reductive cyclisation sequences, respectively. Crown Copyright (c) 2013 Published by Elsevier Ltd. All rights reserved.